Not sure about resource hungry - I use it to record mixes on my shithouse Celly 1.6 laptop with 256 ram and it works fine, recording high bitrate mixes and then converting to MP3. I have had to go through and delete a few gig of the temp files it uses when you record from time to time, it dosen't seem to clean up after itself.
Didn't now it had inbuilt burn to cd, I just burn the wav's in windows and it works fine?
Can't help either, sorry, but wondering how you go about setting the bitrate when exporting a WAV to MP3?
Help file said something about when you first do it, it asks you to locate some file, then you can set the bitrate...only when I did this, it just went ahead and exported it...to rather low quality. Not sure exactly what, but ended up with a 60Mb file which is a mix just over 1hr, so I'm guessing it's about 128kb or something about there. Have a new version of Win Media Player which doesn't display the bitrate when playing a file like my older version did.
Assuming your using the lame encoder, Ctrl-P for preferences > file formats tab > bottom option (mp3 export setup box) to set default mp3 bitrate.
Audacity doesn't come with an encoder, you need to download it separately and in the same box as mentioned in preferences above, find the lame.dll file once you download it to internally encode mp3's in audacity.
That sounds like a big headache.
Check out Wavelab (Steinberg), it's pretty much the daddy of audio/wave editing software. Tons of features and very intuitive.
Otherwise have a look at Goldwave. Its free and simple and no headaches.